SREL Reprint #0662




Geographic Differences of Growth Rate of Sceloporus Lizards (Sauria:  Iguanidae)

Gary W. Ferguson and Todd Brockman



Laboratory produced hatchlings of Sceloporus gracious graciosus, S. undulatus consobrinus, S. u. garmoni and S. u. undulatus that were raised under identical social, thermal-gradient and feeding environments grew at significantly distinct, population-specific rates.  Growth rates expressed in the laboratory closely approximated those measured in the field for some populations, but were higher in the laboratory for others.  Juvenile growth rate differences measured in the field seem due in part to genetic differences and in part to differences in the quality of the natural growing environment.


SREL Reprint #0662

Ferguson, G.W. and T. Brockman. 1980. Geographic differences of growth rate of Sceloporus lizards (Sauria: Iguanidae). Copeia 1980:259-264.

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